The most common and most likely answer to this crossword clue is the 9 letter word STAMPEDED
I've seen this crossword clue in Financial Times
S
T
A
M
P
E
D
E
D
More clues leading to the result STAMPEDED
Buddy explains!
The straight part
We know that "Rushed" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case rushed = stampeded.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does STAMPEDED mean?
STAMPEDED verb- To run away in a panic; said of cattle, horses, etc., also of armies.
- To disperse by causing sudden fright, as a herd or drove of animals.
- (of people) To move rapidly in a mass.